Provider Feature Matrix v1.7.x

The tables below indicate which features are supported by which in-tree libfabric providers. Please update the tables as appropriate if you see a box that hasn't been assessed or an incorrect mark in one of the boxes.

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Key

✓ = well supported

* = limited support (e.g., not supported for all endpoint types or not optimal for performance)

❌ = not supported

U = supported through utility provider(s)

R = required mode bit

O = optional mode bit

(no mark) = not applicable or not needed

? = provider hasn't been assessed yet for this feature

C = same as that of Core provider.

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Endpoint Types	bgq	gni	mlx	nd	psm	psm2	rxd	rxm	shm	sockets	tcp	udp	usnic	verbs
FI_EP_DGRAM	❌	✓	❌	❌	✓	✓	❌	❌	❌	✓		✓	✓	*
FI_EP_MSG	❌	✓	❌	✓	❌	❌	❌	❌	❌	✓	✓	❌	*	✓
FI_EP_RDM	✓	✓	*	U	✓	✓	✓	✓	✓	✓	U	U	*	U

Primary Capabilities	bgq	gni	mlx	nd	psm	psm2	rxd	rxm	shm	sockets	tcp	udp	usnic	verbs
FI_ATOMIC	✓	✓	❌	❌	✓	✓	✓	❌	✓	✓	❌	❌	❌	*
FI_DIRECTED_RECV	✓	✓	❌	❌	❌	✓	✓	✓	❌	✓	❌	❌	❌	❌
FI_MSG	✓	✓	❌	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓	✓
FI_MULTICAST	?	❌	❌	❌	❌	❌	❌	❌	❌	❌		*	❌	❌
FI_NAMED_RX_CTX	✓	✓	❌	❌	❌	✓	❌	❌	❌	✓		❌	❌	❌
FI_READ	✓	✓	❌	✓	✓	✓	✓	✓	✓	✓	✓	❌	❌	✓
FI_RECV	✓	✓	❌	✓	✓	✓	✓	✓	✓	✓	✓	✓	*	✓
FI_REMOTE_READ	✓	✓	❌	✓	✓	✓	✓	✓	✓	✓	✓	❌	❌	✓
FI_REMOTE_WRITE	✓	✓	❌	✓	✓	✓	✓	✓	✓	✓	✓	❌	❌	✓
FI_RMA	✓	✓	❌	✓	✓	✓	✓	✓	✓	✓	✓	❌	❌	*
FI_SEND	✓	✓	❌	✓	✓	✓	✓	✓	✓	✓	✓	✓	*	✓
FI_TAGGED	✓	✓	✓	❌	✓	✓	✓	✓	✓	✓	❌	❌	❌	*
FI_WRITE	✓	✓	❌	✓	✓	✓	✓	✓	✓	✓	✓	❌	❌	✓
FI_VARIABLE_MSG	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌

Secondary Capabilities	bgq	gni	mlx	nd	psm	psm2	rxd	rxm	shm	sockets	tcp	udp	usnic	verbs
FI_FENCE	✓	✓	✓	❌	❌	❌	❌	❌	❌	✓	❌	❌	❌	❌
FI_LOCAL_COMM	?	✓	✓	❌	✓	✓	C	C	✓	✓	✓	✓	❌	✓
FI_MULTI_RECV	✓	✓	❌	❌	✓	✓	✓	✓	✓	✓		❌	❌	*
FI_REMOTE_COMM	?	✓	✓	✓	✓	✓	✓	C	❌	✓	✓	✓	✓	✓
FI_RMA_EVENT	❌	✓	❌	❌	✓	✓	✓	❌	❌	✓			❌	❌
FI_RMA_PMEM	❌	❌	❌	❌	❌	❌	❌	❌	❌	✓	✓	❌	❌	❌
FI_SHARED_AV					❌	✓	❌	❌	❌	✓
FI_SOURCE	✓	✓	❌		❌	✓	✓	✓	✓	✓		✓	✓	❌
FI_SOURCE_ERR		✓			❌	✓		?	❌	❌		?	?	?
FI_TRIGGER	:x	✓	❌	❌	✓	✓		❌	❌	✓	❌	❌	❌	❌

Modes	bgq	gni	mlx	nd	psm	psm2	rxd	rxm	shm	sockets	tcp	udp	usnic	verbs
FI_ASYNC_IOV	R
FI_BUFFERED_RECV
FI_CONTEXT	R		R	R	R	R		O
FI_CONTEXT2
FI_LOCAL_MR (compat)				R				O					R	R
FI_MSG_PREFIX													R
FI_NOTIFY_FLAGS_ONLY
FI_RESTRICTED_COMP
FI_RX_CQ_DATA	O													R

Memory Registration Modes	bgq	gni	mlx	nd	psm	psm2	rxd	rxm	shm	sockets	tcp	udp	usnic	verbs
FI_MR_ALLOCATED				R				C						R
FI_MR_ENDPOINT
FI_MR_LOCAL				R				C						R
FI_MR_PROV_KEY				R				C						R
FI_MR_MMU_NOTIFY
FI_MR_RAW
FI_MR_RMA_EVENT
FI_MR_VIRT_ADDR				R				C						R
FI_MR_BASIC (compat)	✓	✓	✓	✓	✓	✓		✓	❌	✓	O	❌	✓	✓
FI_MR_SCALABLE (compat)	✓	✓	❌	❌	✓	✓		C	✓	✓	O	✓	❌	❌

Additional Features	bgq	gni	mlx	nd	psm	psm2	rxd	rxm	shm	sockets	tcp	udp	usnic	verbs
FABRIC_DIRECT	✓	✓	❌	❌	❌	✓		❌	❌	✓	❌	❌	❌	❌
FI_RM_ENABLED	❌	✓	❌		✓	✓		✓	✓	✓	✓	✓	❌	*
Scalable endpoints	✓	✓	❌	❌	❌	✓		❌	❌	✓	❌	❌	❌	❌
Counters (local operations)	✓	✓	❌	✓	✓	✓	✓	✓	❌	✓	❌	❌	❌	*
Counters (remote operations)					✓	✓					❌	❌	❌

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Note: The mxm provider was deprecated and removed from libfabric. It has been replaced with the mlx provider.